CVE-2020-1735 Path Traversal in Ansible

What is CVE-2020-1735?

CVE-2020-1735 is a medium-severity path traversal vulnerability in Debian Debian Linux, published on 16 Mar 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A flaw was found in the Ansible Engine when the fetch module is used. An attacker could intercept the module, inject a new path, and then choose a new destination path on the controller node. All versions in 2.7.x, 2.8.x and 2.9.x branches are believed to be vulnerable.

Weakness: CWE-22

Which versions are affected by CVE-2020-1735?

7 open source packages ship an affected version, including ansible. It affects 6 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Redhat Ansible, Redhat Ansible Tower, Redhat Cloudforms Management Engine, Redhat Openstack.

How do I fix CVE-2020-1735?

Upgrade ansible to a fixed version for your release line: 2.7.17, 2.8.9, 2.9.6 or 2.7.18.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2020-1735 being exploited?

There is no known exploitation of CVE-2020-1735 in the wild and no public exploit code.

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• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-1735, GHSA-gfr2-qpxh-qj9m, PYSEC-2020-7, UBUNTU-CVE-2020-1735.